package com.xuecheng.base.exception;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Mr.M
 * @version 1.0
 * @description TODO
 * @date 2023/2/12 17:01
 */
@Slf4j
@ControllerAdvice
//@RestControllerAdvice
public class GlobalExceptionHandler {

  //对项目的自定义异常类型进行处理
  @ResponseBody
  @ExceptionHandler(XueChengPlusException.class)
  @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
  public RestErrorResponse customException(XueChengPlusException e) {

    //记录异常
    log.error("自定义异常 {}", e.getErrMessage(), e);
    //..

    //解析出异常信息
    String errMessage = e.getErrMessage();
    RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
    return restErrorResponse;
  }


  @ResponseBody
  @ExceptionHandler(Exception.class)
  @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
  public RestErrorResponse exception(Exception e) {

    //记录异常
    log.error("系统异常 {}", e.getMessage(), e);

    //解析出异常信息
    RestErrorResponse restErrorResponse = new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());
    return restErrorResponse;
  }

  @ResponseBody
  @ExceptionHandler(MethodArgumentNotValidException.class)
  @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
  public RestErrorResponse methodArgumentNotValidException(MethodArgumentNotValidException e) {

    BindingResult bindingResult = e.getBindingResult();
    //存储错误信息
    List<String> errors = new ArrayList<>();
    bindingResult.getFieldErrors().stream().forEach(item -> {
      errors.add(item.getDefaultMessage());
    });

    //将list中的错误信息拼接起来
    String errMessage = StringUtils.join(errors, ",");
    //记录异常
    log.error("JSR303 异常 {} {}", e.getMessage(), errMessage, e);

    //解析出异常信息
    RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
    return restErrorResponse;
  }


}
